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DIAGNOSIS CODE TABLE
When the diagnosis system detects malfunctions, the check engine lamp will go on even if the diagnosis
connector test terminal is not connected to the earth terminal.
Code
Number of flashing
No.
13
21
31
42
43
44
45
51
52
81
83
Diagnosis
Diagnosis contents
item
• When the engine revolution
Engine
revolution
signal is not inputted while the
signal
starter switch is on.
• When the input signal from the
Oxygen
oxygen sensor shows too lean
sensor
air-to-fuel ratio under certain
signal
conditions:
• When the input signal from the
Pressure
sensor
pressure sensor becomes more
signal
than 4.9 V or less than 0.7 V.
• When the engine cooling water
Cooling
water
temperature sensor circuit
temperature
becomes open or shorted.
signal
• When the intake air temperature
Intake
air temp.
sensor circuit becomes open or
signal
shorted.
• When the A/C evaporator
A/C evapo.
temperature
temperature sensor circuit
sensor
exhibits open or short.
• When the A/C switch is turned on,
the rotation signal from the A/C
A/C
compressor becomes too low
compressor
because of slipping of the magnet
clutch or overload.
• When the A/C switch is turned on,
the idle switch is turned off with
Switch
the test terminal of the diagnosis
signal
connector shorted. However no
memorizing will take place.
• When the vehicle speed sensor
Vehicle
speed
signal circuit exhibits open wire or
or short circuit.
sensor
signal
• When the rolling codes can not
be exchanged between the EFI
Immobilizer
ECU and the immobilizer ECU
signal
or the rolling codes are not
matched.
• When the rolling codes can not
be exchanged in the EFI ECU.
Immobilizer
signal
Trouble area
1. Cam angle sensor & circuit
1. Oxygen sensor circuit
2. Oxygen sensor
1. Pressure sensor circuit
2. Pressure sensor
1. Water temp. sensor circuit
2. Water temperature sensor
1. Air temperature sensor circuit
2. Air temperature sensor
1. A/C evaporator temperature
sensor circuit
2. A/C evaporator temperature sensor
1. A/C magnet clutch
2. A/C lock sensor circuit
1. A/C switch circuit
2. A/C switch
3. Idle switch circuit
4. Throttle position sensor
1. Vehicle speed sensor circuit
2. Vehicle speed sensor
1. Wire harness between the
Immobilizer ECU and EFI ECU
2. Immobilizer ECU
3. EFI ECU
1. EFI ECU
EF–19
See
page
EF–202
EF–22
EF–257
EF–27
EF–29
EF–31
EF–33
EF–35
EF–37
EF–39
EF–39
JEF00062-00405
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